I had a different glitch but this reminded me. I have a 2017 Macbook Pro. About a week ago, the left speaker randomly started blasting odd rhythmic white noise. It stopped after a few seconds, but it appears to have blown the left speaker. I've no idea if this is common, or how to prove it and get a new one, or if I even care to go through the hassle.
This happened to me as well a few weeks ago. Same model MBP. Left speaker got blown out. Haven't had time to take it in to Apple yet (my right hand USB-C ports are also dead so I'm overdue anyway). Googling it, it seems we're not alone
